<?php

   $phpver = phpversion();
   
   $useragent = (isset($_SERVER["HTTP_USER_AGENT"]) ) ? $_SERVER["HTTP_USER_AGENT"] : $HTTP_USER_AGENT;

	
   if ( $phpver >= '4.0.4pl1' && ( strstr($useragent,'compatible') || strstr($useragent,'Gecko') ) )
   {
       if (extension_loaded('zlib') )
       {   
           ob_start('ob_gzhandler');
	   
       }
   }
   else if ( $phpver > '4.0' )
   {
	
       if ( strstr($HTTP_SERVER_VARS['HTTP_ACCEPT_ENCODING'], 'gzip') )
       {
           if ( extension_loaded('zlib') )
           {
               $do_gzip_compress = TRUE;
               ob_start();
               ob_implicit_flush(0);

               header('Content-Encoding: gzip');
		
           }
       }
   }

?>